What is the last year that US silver dollars were minted?

1935 was the last year silver dollars were made for circulation. However they continued to circulate long after that, into the early 1960s in limited parts of the country, until the price of silver rose and it was more profitable to withdraw the coins and melt them for their metal content.

All circulating dollars since then have been made of copper-nickel or brass.

Collectors' coins and commemoratives

Some Eisenhower dollars (1971-78) that were made in San Francisco have 40% silver content; these are typically in uncirculated or proof containers and were only sold to collectors.

In 1986, The United States Mint first released the American Silver Eagle. These coins say one dollar one the back, and are one troy ounce of silver. These are marked on the back: 1 oz. FINE SILVER. These coins are minted by Philadelphia (P), and West Point(W). They're bullion coins sold to investors but they're not intended for circulation. Their cost is actually based on the spot price of silver..

1964 Peace Dollars

In the early 1960s the casino industry and silver mining interests jointly lobbied for production of new silver dollars to be used in slot machines and other types of gambling. In 1964 the Denver Mint made a trial run of about 330,000 Peace dollars but by that point the price of silver had risen to the point where the coins were worth far more than $1 in metal so the program was scrapped.

All of the coins were supposedly melted but rumors persist that a small number were hidden by Mint employees. Many numismatists feel that if those coins do exist, they would be among the greatest American rarities, on a par with 1804 silver dollars and 1933 double eagles.